OBD-II Code · Transmission
P0711
Transmission Fluid Temperature Sensor Performance
Severity
medium
Worth booking. It costs fuel, emissions or comfort until it is fixed.
Can you drive it
Only if running normally
A short trip to a shop may be reasonable if the light is steady and the car runs normally. Stop safely for a flashing light, severe shaking, overheating, loss of power, or another urgent warning. The code alone cannot confirm safety.
Indicative cost (USD)
$150–$400
Varies by vehicle, diagnosis, parts, and local labor. This is not a repair quote.
Trans temp sensor reading is out of expected range.
How a shop works this
Work from evidence to part, not the other way round. A code names a circuit or a symptom; it does not name the part that failed.
Note every code that is set, not just this one.
Codes that appear together usually narrow the cause faster than any one of them read alone.
Read the freeze frame — the conditions the fault was recorded under.
Cold or warm, idle or load, road speed and engine speed. A fault that only appears cold is a different fault from one that only appears under load, even with the same code on the scanner.
Confirm the fault is current rather than history.
Clear the code and see whether it returns under those same conditions. A code that does not come back may have been logged during a repair, a flat battery, or a bad connection that has since been disturbed.
Then work the likely-causes list in the order shown.
That order is what a shop checks first for this code — wiring and connections before the component they run to, because a connector costs nothing to inspect and is a common answer.
If the code comes back after a repair, the underlying fault is still there. That is the point to bring in a scanner with live data and freeze-frame, or a shop that has one.
Common symptoms
- Check engine light
- Possible limp mode
Likely causes
- Failed TFT sensorMost common
- Low trans fluid
- Wiring
Read the full diagnostic procedureP0711 is a rationality fault: the TCM sees a TFT signal that is technically inside the valid voltage range but does not change in a way that is consi…
P0711 is a rationality fault
the TCM sees a TFT signal that is technically inside the valid voltage range but does not change in a way that is consistent with engine operation, for example the fluid temp stays pinned at one value for 10+ minutes of driving when it should be climbing, or the temp at cold-start is wildly off ambient. The diagnostic threshold most TCMs use is a delta-from-coolant check at cold start, if ECT and TFT are more than 50F apart after a 6+ hour cold soak the code arms. Cheap diagnostics first: scan-tool live data for TFT during a cold-start drive cycle, expect to see 30-50F at key-on (matching ambient and ECT), climbing through 100F by 5 minutes, reaching 160-180F by 10-15 minutes of moderate driving, and stabilizing at 175-200F in steady-state. A flatline reading or a value that lags ECT by more than 60F is the rationality failure. Verify the ATF level is correct on the dipstick or via the level-check port at the spec temperature (most modern trans require 95-115F for an accurate level check), because low fluid causes erratic temp readings as the sensor uncovers during hard cornering. Expensive misdiagnosis: TCM replacement is sometimes recommended by parts-cannon shops when the actual fault is a stuck thermistor inside the solenoid pack, on integrated-mechatronic platforms the only valid repair is the full pack, but on older transmissions with a discrete external sensor (4L60E, 4R70W, AX4N) the sensor is $30-60 and a 30-minute job.
Vehicle-specific patterns2004-2010 Toyota Sienna/Highlander with U151E/U151F sees P0711 from ATF degradation, the temp sensor reads correctly but the rationality logic compar…
- 2004-2010Toyota Sienna/Highlander with U151E/U151F sees P0711 from ATF degradation, the temp sensor reads correctly but the rationality logic compares against an expected-warmup curve calibrated for fresh fluid;
- 2008-2013Nissan Altima/Maxima CVT (RE0F09A/B) throws P0711 alongside CVT belt-wear codes, JATCO TSB NTB10-099 covers the diagnostic;
- 2006-2011GM 4L60E in Trailblazer/Envoy has a discrete external TFT pigtail at the trans case connector that is individually serviceable and is the first thing to check.
Estimated repair$120 to $1,900.
Look up another code
P0711 — frequently asked
What does a P0711 code mean?
Trans temp sensor reading is out of expected range.
What causes a P0711 code?
Common causes: Failed TFT sensor; Low trans fluid; Wiring.
What are the symptoms of a P0711 code?
Typical symptoms: Check engine light; Possible limp mode.
Is it safe to drive with a P0711 code?
Only if running normally. A short trip to a shop may be reasonable if the light is steady and the car runs normally. Stop safely for a flashing light, severe shaking, overheating, loss of power, or another urgent warning. The code alone cannot confirm safety. Estimated repair: $150-$400.
How do I diagnose a P0711 code?
Work from evidence to part, not the other way round. A code names a circuit or a symptom; it does not name the part that failed. 1. Note every code that is set, not just this one. 2. Read the freeze frame — the conditions the fault was recorded under. 3. Confirm the fault is current rather than history. 4. Then work the likely-causes list in the order shown.
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